Annular brush



April 20, 1954 I K o w 2,675,572

ANNULAR BRUSH I Filed Aug. 22, 1950 INVENTOR. Hrank K. Nomlya PatentedApr. 20, 1954 vUNITED STATES PATENT OFFICE ANNULAR BRUSH Frank K.Nomiya, Los Angeles, Calif.

Application August 22, 1950, Serial No. 180,797

1 Claim. 1

This invention relates to brushes, and has for one of its objects theprovision of an annular brush having an annular body of bristles thatproject radially and which body is supported from the handle in a mannerthat insures against detrimental distortion of the brush when in use.

Another object of the invention is the provision of an annular brushhaving an annular body of bristles with the center of the bodysubstantially open to permit dirt and foreign material to pass throughthe same and which brush is provided with a handle extending axially ofthe body and at one side thereof.

Heretofore brushes intended for use in clean ing cylindrical, orgenerally cylindrical vessels, or shallow circular pans, have normallybeen generally U-shaped with the handle projecting from one side of theU. Usually in brushes of the type having the bristles secured betweentwisted wires, the ends of the U have been extended to either form ahandle or for securement of the handle thereto. In many instances, it ispractically impossible to use the conventional brushes in cylindricalvessels, either because the vessel is too deep and one of itssidesinterferes with the handle, or because the largest side of thebrush cannot be fiat on the bottom, and contact between the brush andthe bottom or lower corner of the vessel is only with the bristles atthe tip end of the brush.

Also in conventional brushes that have heretofore attempted to makearcuately extending bodies at the end of a handle for use in cylindricalor substantially cylindrical vessels, the outer end of the brush orbrush body is unsupported and a cleaning pressure cannot be appliedwithout permanently bending the body.

One of the objects of the present invention is the provision of a brushthat has none of the above objections and that is cheap and easy to makeand string, and which brush will readily reach the curved lower cornerof a cylindrical vessel at any side of the latter and that may berotated on its central axis with the application of appreciable pressurewithout injury to the brush or detrimental distortion thereof.

Insofar as the present brush is concerned, the provision of an annularbrush with an axially extending handle, and which brush is adapted tosimultaneously clean the bottom and the sides of a vessel along itslower corner and along the line of the juncture between said sides andbottom with the minimum of effort and with maximum efliciency is anotherobject of the invention.

Other objects and advantages will appear in the description and in thedrawings.

In the drawings, Fig. 1 is a perspective view of the brush with thetwisted wire support for the same clearly emphasized to show thestructure of the support.

Fig. 2 is a sectional view as seen from line 2--2 of Fig. 1.

Fig. 3 is an enlarged sectional view taken through one side of theannular body of bristles to indicate the radial directions of thebristles.

In the preferred form of the invention the brush head, generallydesignated 1 is annularly shaped and is formed from asingle length oftwisted wire.

The opposite end portions 2, 3 of the said wire (two wires twistedtogether form the one length of wire) may extend substantially parallelinto one end of a handle 4 in which they are securely held. The handle 4shown herein is elongated so as to extend longitudinally of the endportions 2, 3, although it is to be understood that for certain uses thehandle may be of another shape.

Intermediate the end portions 2, 3 of said single length of wire, thelatter is formed to provide an annular support 5 for bristles 6.

These bristles are held between the two wires that are twisted togetherto form the single length having end portions 2, 3, and the bristlesproject radially from two sides of the portion 5. Thus an annulartorus-shaped, centrally open, body of bristles is provided.

Between end portions 2, 3 of the brush and the annular portion 5,portion 2 is formed to provide a laterally projecting loop I thatextends over one side of the annular support 5, and the end of this loopopposite the end that connects with portion 2 is then extended, as at 8,to the side of the annular support 5 that is opposite that over whichloop 1 extends and integrally connects with one end of said portion 5.

The lower end of the portion 3 extends laterally as at 9 to the pointwhere the portion 8 connects with the annular portion 5, where it joinsthe other end of said annular portion.

Where portions 8, 9 join the end of the portion of the wire forming theannular brush support, they may be twisted together as indicated at II)in the drawings.

Only the circular or annular section 5 of the length of wire need havethe bristles B, and the remainder may be bare. The bristles themselvesmay be of any material suitable for brushes and for whatever use thebrush is intended.

By the foregoing structure. it is seen that the equal pressure at pointsaround the body. The

loop 1 supports the side of the body opposite its connection withportions 8, 9, and these latter portions also strengthen the head.

When in a vessel and on the bottom, as above mentioned, the brush can begiver-La rotary movement or-a revolvable movement, andthecorners of thevessel will be cleaned as well as the sides adjacent said lower corners.

Any foreign material will readily pass through the center of the annularbrush at opposite sides of the loop 1 or portions 8, 9, or .theymay;pass through the loops provided by these portions.

I claim:

A brush comprising a length of wire formed :to provide an annularsupport for bristles, bristles projecting radially outwardly from saidsupport at all pointsaround the same and in all directions normal to theaxis of said Wire to form a .ttorus-tshaped-brush,one end portion ofsaid wire support to a point adjacent the central axis 01' said supportand then axially thereof, the other end portion of said wire extendinggenerally diametrically across said support from said first mentionedpoint to the opposite side of said support and in engagement with thelatter and back to a point adjacent said central axis and axiallythereof alongside said first mentioned portion to form a handle.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 497,636 Davis May 16, 1893 1,451,400 Moe Apr. 10, 19231,909,432 Swanson May 16, 1933 1,927,917 Canfield Sept. 26, 19332,023,202 Krebs Dec. 3, 1935 2,513,719 Glass July 4, 1950 FOREIGNPATENTS Number Country Date 303,939 Great "Britain Jan. 1, 1929

